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REVENUE RECOGNITION - Revenue Recognition Method (Details) - Americas Fabrication	12 Months Ended
	Aug. 31, 2020	Aug. 31, 2019
Recognized as Amounts are Billed
Disaggregation of Revenue [Line Items]
Contract as percent of total segment revenue (percent)	77.00%	79.00%
Fabricated Product and Installation Services | Recognized over Time
Disaggregation of Revenue [Line Items]
Contract as percent of total segment revenue (percent)	12.00%	12.00%
Fabricated Product without Installation Services | Recognized over Time
Disaggregation of Revenue [Line Items]
Contract as percent of total segment revenue (percent)	11.00%	9.00%

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- Definition

Contract with Customer, Contract as Percent of Total Revenue

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- Definition

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